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<Title>Glass Bar Shading</Title>
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<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1">Glass Bar Shading</p>
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<img src="images/glasslightbar.png" width='600' height='360'>
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This example demonstrates using glass shading effect for bars and gradient color for plot area background. It also demonstrates axis labels on both sides of the plot area.<br><br>
Glass lighting is a complex shading effect that gives a look and feel of tinted glass or semi-transparent plastic material. This effect involves glare and variation of lighting caused by reflection and refraction inside the material.<br><br>
<ul><li> The gradient plot area background is configured by using <a href="BaseChart.linearGradientColor.htm">BaseChart.linearGradientColor</a> to define the gradient color, then use <a href="XYChart.setPlotArea.htm">XYChart.setPlotArea</a> to apply it to the plot area.<br><br>
<li> The <a href="XYChart.setPlotArea.htm">XYChart.setPlotArea</a> also sets the plot area border and grid line colors to white.<br><br>
<li> The glass shading effect of the bars is defined using <a href="Chart.glassEffect.htm">Chart.glassEffect</a>, then applied to the bars using <a href="Layer.setBorderColor.htm">Layer.setBorderColor</a>.<br><br>
<li> <a href="XYChart.syncYAxis.htm">XYChart.syncYAxis</a> is used to show two synchronized y-axes on both sides of the plot area.<br><br>
<li> <a href="Axis.setColors.htm">Axis.setColors</a> is used to set the y-axes to <a href="Chart.Transparent.htm">Transparent</a>, so only the axis labels are visible.<br><br>
<li> The axis label font is set to Arial Bold using <a href="Axis.setLabelStyle.htm">Axis.setLabelStyle</a>.</ul>
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<p class="heading1a">Source Code Listing</p>
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<b>[JSP Version]</b> jspdemo/glasslightbar.jsp
<div class='codeblock'><code class='pre'>&lt;%@page import="ChartDirector.*, java.util.*" %&gt;
&lt;%
// The data for the bar chart
double[] data = {450, 560, 630, 800, 1100, 1350, 1600, 1950, 2300, 2700};

// The labels for the bar chart
String[] labels = {"1996", "1997", "1998", "1999", "2000", "2001", "2002", "2003", "2004", "2005"};

// Create a XYChart object of size 600 x 360 pixels
XYChart c = new XYChart(600, 360);

// Set the plotarea at (60, 40) and of size 480 x 280 pixels. Use a vertical gradient color from
// light blue (eeeeff) to deep blue (0000cc) as background. Set border and grid lines to white
// (ffffff).
c.setPlotArea(60, 40, 480, 280, c.linearGradientColor(60, 40, 60, 280, 0xeeeeff, 0x0000cc), -1,
    0xffffff, 0xffffff);

// Add a title to the chart using 18pt Times Bold Italic font
c.addTitle("Annual Revenue for Star Tech", "Times New Roman Bold Italic", 18);

// Add a multi-color bar chart layer using the supplied data. Use glass lighting effect with light
// direction from the left.
c.addBarLayer3(data).setBorderColor(Chart.Transparent, Chart.glassEffect(Chart.NormalGlare,
    Chart.Left));

// Set the x axis labels
c.xAxis().setLabels(labels);

// Show the same scale on the left and right y-axes
c.syncYAxis();

// Set the left y-axis and right y-axis title using 10pt Arial Bold font
c.yAxis().setTitle("USD (millions)", "Arial Bold", 10);
c.yAxis2().setTitle("USD (millions)", "Arial Bold", 10);

// Set all axes to transparent
c.xAxis().setColors(Chart.Transparent);
c.yAxis().setColors(Chart.Transparent);
c.yAxis2().setColors(Chart.Transparent);

// Set the label styles of all axes to 8pt Arial Bold font
c.xAxis().setLabelStyle("Arial Bold", 8);
c.yAxis().setLabelStyle("Arial Bold", 8);
c.yAxis2().setLabelStyle("Arial Bold", 8);

// Output the chart
WebChartViewer viewer = new WebChartViewer(request, "chart1");
viewer.setChart(c, Chart.SVG);

// Include tool tip for the chart
viewer.setImageMap(c.getHTMLImageMap("", "", "title='Year {xLabel}: US$ {value}M'"));
%&gt;
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Glass Bar Shading&lt;/title&gt;
    &lt;!-- Include ChartDirector Javascript Library to support chart interactions --&gt;
    &lt;script type="text/javascript" src="cdjcv.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body style="margin:5px 0px 0px 5px"&gt;
    &lt;div style="font:bold 18pt verdana;"&gt;
        Glass Bar Shading
    &lt;/div&gt;
    &lt;hr style="border:solid 1px #000080; background:#000080" /&gt;
    &lt;div style="font:10pt verdana; margin-bottom:1.5em"&gt;
        &lt;a href="viewsource.jsp?file=&lt;%=request.getServletPath()%&gt;"&gt;View Source Code&lt;/a&gt;
    &lt;/div&gt;
    &lt;!-- ****** Here is the chart image ****** --&gt;
    &lt;%= viewer.renderHTML(response) %&gt;
&lt;/body&gt;
&lt;/html&gt;</code></div>
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